{"project":{"acronym":"","projectId":17453,"title":"Photon-Counting Microwave Kinetic Inductance Detectors (MKIDs) for High Resolution Far-Infrared Spectroscopy","primaryTaxonomyNodes":[{"taxonomyNodeId":10741,"taxonomyRootId":8816,"parentNodeId":10740,"level":3,"code":"TX08.1.1","title":"Detectors and Focal Planes","definition":"Detectors, focal planes and readout integrated circuits provide large-format array technologies that require high quantum efficiency (QE); low noise, high resolution, uniform, and stable response; low power and cost; and high reliability. These technologies include low-noise, high-speed, low-power and radiation hardened readout integrated circuit (ROIC) electronics; superconducting sensors; spectral detectors; polarization-sensitive detectors; radiation-hardened detectors; and micro-Kelvin and sub-Kelvin high sensitivity detectors that cover the spectrum from submillimeter wave (Far-IR) to X-ray.","exampleTechnologies":"Backshort Undergrid bolometer arrays, Mercury Cadmium Telluride and Strained Superlattice Arrays, charge coupled devices, sidecar readout integrated circuits, radiometric calibration and abnormality correction algorithms (e.g. non-uniformity)","hasChildren":false,"hasInteriorContent":true}],"startTrl":2,"currentTrl":2,"endTrl":3,"benefits":"
This work will benefit future cryogenic balloon-borne missions, or future Decadal survey-recommended Far-IR Surveyor, or Explorer-class space flight missions (such as the SPICA, SPIRIT, SPECs mission concepts).
","description":"We are developing ultrasensitive Microwave Kinetic Inductance Detectors (MKIDs) for high resolution far-infrared spectroscopy applications, with a long-term goal of achieving photon-counting sensitivity in low photon backgrounds.
MKIDs are superconducting thin film microwave resonators made in planar transmission line circuits. These resonators experience a change in resonance frequency and quality factor when incident far-infrared power is absorbed in the inductor region of the detector. This perturbation can be observed by monitoring the resonator with a microwave tone on resonance via a microwave feedline. MKIDs are therefore intrinsically adapted for frequency multiplexing and appealing for use in next-generation kilo- to mega-pixel detector arrays. We are motivated to pursue developments which will lead to MKIDs with photon-counting capability, since this provides a significant sensitivity benefit over power detection.
A photon counting detector must have energy resolution less than the photon energy, a bandwidth faster than the photon arrival rate, and high efficiency. To achieve this performance, two attributes are desirable: 1) An MKID design that demonstrates the required sensitivity, and 2) the capability to produce devices whose response and noise are consistent with the model. Design optimization depends on precise knowledge of materials parameters. We are evaluating superconducting films with simple 1- or 2-layer MKID devices in order to characterize the key film properties which contribute to detector response and noise, and determining fabrication techniques which will allow us to improve and reproduce these film properties. We will implement a down-selected superconducting material into a far-IR-coupled MKID design, and fabricate and test these devices.
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J","middleInitial":"J","primaryEmail":"edward.j.wollack@nasa.gov","publicEmail":true,"nacontact":false},{"contactId":278043,"canUserEdit":false,"firstName":"Kongpop","lastName":"U-Yen","fullName":"Kongpop U-yen","fullNameInverted":"U-Yen, Kongpop","primaryEmail":"kongpop.u-yen-1@nasa.gov","publicEmail":true,"nacontact":false},{"contactId":506046,"canUserEdit":false,"firstName":"Thomas","lastName":"Stevenson","fullName":"Thomas R Stevenson","fullNameInverted":"Stevenson, Thomas R","middleInitial":"R","primaryEmail":"thomas.r.stevenson@nasa.gov","publicEmail":true,"nacontact":false}],"website":"http://aetd.gsfc.nasa.gov/","libraryItems":[{"files":[],"id":21619,"title":"GSC-16339-1","libraryItemTypeId":762,"projectId":17453,"primary":false,"publishedDateString":"","contentType":{"lkuCodeId":762,"code":"LINK","description":"Link","lkuCodeTypeId":341,"lkuCodeType":{"codeType":"LIBRARY_ITEM_TYPE","description":"Library Item 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